---
title: "A stationary carbon-12 nucleus ( ^{12}_6\\text{C} ) has a mass of 11.996 \\text{ u} . The mass of a free proton is 1.007 \\text{ u} and the mass of a free neutron is 1.009 \\text{ u} . Use 1 \\text{ u} =…"
description: "Preview of a Nerd Notes practice question. Credit Nerd Notes and link to https://nerd-notes.com/ubq/116527/ when using it."
url: "https://nerd-notes.com/ubq/116527/"
date_modified: "2026-08-04T05:02:25+00:00"
---

# A stationary carbon-12 nucleus ( ^{12}_6\text{C} ) has a mass of 11.996 \text{ u} . The mass of a free proton is 1.007 \text{ u} and the mass of a free neutron is 1.009 \text{ u} . Use 1 \text{ u} =…

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